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Alexeev081 [22]
3 years ago
14

A pyramid has a square base with side s. The height of the pyramid is 2/3 that of its side. What is the expression for the volum

e of the pyramid?
A) V = 2s^2
B) V = 2s^3
C) V = 2/3s^2
D) V = 2/9s^3
E) V = 1/3s^3


Random answers will be reported!
Mathematics
1 answer:
Temka [501]3 years ago
8 0

Answer:

The correct option is option D

Step-by-step explanation:

The volume of a pyramid is:

V=1/3(B)(H)

Where

B:Base = s^2

H:Height = 2/3s

Then:

V=1/3(B)(H) = 1/3(s^2)(2/3s) = 2/9s^3

The correct option is option D

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Write the equation of the line in slope intercept form if its slope is 3 and y intercept is -5
Veseljchak [2.6K]

Answer:

y = 3x - 5

Step-by-step explanation:

1. The slope-intercept form a line is y = mx + b, where y = y-coordinate, m = slope, x = x-coordinate, and b = y-intercept.

2. Given the values of m and b, let's plug them in:

  • y = (3)x+(-5)
  • y = 3x-5

Therefore, the equation of the line in slope-intercept form is y = 3x - 5.

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3 years ago
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How should the decimal point in 948.921 change to get the correct answer to 948.921 ÷ 10 to the power of 4?
k0ka [10]

Answer:

move it 4 places to the left

Step-by-step explanation:

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In a certain school district, it was observed that 32% of the students in the element schools were classified as only children (
kipiarov [429]

Answer:

We conclude that the proportion of only children in the special program is significantly different from the proportion for the school district.

Step-by-step explanation:

We are given that in a certain school district, it was observed that 32% of the students in the element schools were classified as only children (no siblings).

However, in the special program for talented and gifted children, 135 out of 347 students are only children.

<u><em>Let p = population proportion of only children in the special program.</em></u>

So, Null Hypothesis, H_0 : p = 32%     {means that the proportion of only children in the special program is equal to the proportion for the school district}

Alternate Hypothesis, H_A : p \neq 32%     {means that the proportion of only children in the special program is significantly different from the proportion for the school district}

The test statistics that would be used here <u>One-sample z proportion statistics</u>;

                         T.S. =  \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p  = sample proportion of only children in the special program = \frac{135}{347} = 0.39

            n = sample of students = 347

So, <em><u>test statistics</u></em>  =  \frac{0.39-0.32}{\sqrt{\frac{0.39(1-0.39)}{347} } }  

                              =  2.673

The value of z test statistics is 2.673.

<em>Now, at 0.02 significance level the z table gives critical value of -2.3263 and 2.3263 for two-tailed test. Since our test statistics does not lie within the range of critical values of z, so we have sufficient evidence to reject our null hypothesis as it will in the rejection region due to which </em><u><em>we reject our null hypothesis</em></u><em>.</em>

Therefore, we conclude that the proportion of only children in the special program is significantly different from the proportion for the school district.

4 0
3 years ago
PLEASE HELP!!!!!!!!!!
LenKa [72]

Answer:

a

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What is the scale factor?
gayaneshka [121]

Answer:

A scale factor is a number which scales, or multiplies, some quantity. ... In the field of measurements, the scale factor of an instrument is sometimes referred to as sensitivity. The ratio of any two corresponding lengths in two similar geometric figures is also called a scale.

6 0
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